Thursday, May 31, 2007

Ice skaters spin faster by hugging themselves tight, but what does that have to do with riding a bicycle? In both cases, the law of conservation of angular momentum is in effect. Watch a few more angular momentum examples!

Wednesday, May 16, 2007

Sure, Spiderman can stop a block of falling metal, but so can science! Find out how magnets force electrons to move around in little circles, which can cause a falling piece of metal to slow down and nearly stop. Magnetic brakes on your roller-coaster, anyone?